Russia has raised the fees on visas necessary to enter their country.
In the past you could buy a multiple entry visa good for three years for $193.
Now, the same visa will set you back $303. You can find cheaper visas for single entry for $123, or for double entry at $177.
You can find the official visa fees listed on the Russian Embassy’s website. They don’t include the $33 visa center service fee, which there's no way to avoid, so don't forget to add that to your total.
Although the price increase is disappointing, I hear St. Petersburg is worth it!